warnerr.c revision 78527 
1/*
2 * Copyright (c) 1995 - 2001 Kungliga Tekniska H�gskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 *
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * 3. Neither the name of the Institute nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifdef HAVE_CONFIG_H
35#include <config.h>
36RCSID("$Id: warnerr.c,v 1.13 2001/05/16 23:54:19 assar Exp $");
37#endif
38
39#include "roken.h"
40#include "err.h"
41
42#ifndef HAVE___PROGNAME
43const char *__progname;
44#endif
45
46#ifndef HAVE_GETPROGNAME
47const char *
48getprogname(void)
49{
50    return __progname;
51}
52#endif
53
54#ifndef HAVE_SETPROGNAME
55void
56setprogname(const char *argv0)
57{
58#ifndef HAVE___PROGNAME
59    char *p;
60    if(argv0 == NULL)
61	return;
62    p = strrchr(argv0, '/');
63    if(p == NULL)
64	p = argv0;
65    else
66	p++;
67    __progname = p;
68#endif
69}
70#endif /* HAVE_SETPROGNAME */
71
72void
73set_progname(char *argv0)
74{
75    setprogname ((const char *)argv0);
76}
77
78const char *
79get_progname (void)
80{
81    return getprogname ();
82}
83
84void
85warnerr(int doerrno, const char *fmt, va_list ap)
86{
87    int sverrno = errno;
88    const char *progname = getprogname();
89
90    if(progname != NULL){
91	fprintf(stderr, "%s", progname);
92	if(fmt != NULL || doerrno)
93	    fprintf(stderr, ": ");
94    }
95    if (fmt != NULL){
96	vfprintf(stderr, fmt, ap);
97	if(doerrno)
98	    fprintf(stderr, ": ");
99    }
100    if(doerrno)
101	fprintf(stderr, "%s", strerror(sverrno));
102    fprintf(stderr, "\n");
103}
104